1、多功能廳一般屬于主席臺會議，非圓桌會議，與報告廳一樣；
1. The multi-function hall generally belongs to the podium meeting, not a round table meeting, just like the lecture hall;
觀眾席的清晰度和傳聲增益是兩個重要指標(biāo)。傳聲增益較高，則系統(tǒng)可獲得的增益較高，否則清晰度不高。
Audience clarity and sound transmission gain are two important indicators. If the sound transmission gain is high, the gain available to the system is high, otherwise the definition is not high.
3、客觀地向甲方或使用者解釋嘯叫問題；
3. Objectively explain the howling problem to Party A or the user;
4、輔助音箱的作用不可缺少；
4. The role of auxiliary speakers is indispensable;
5、主擴聲和輔助音箱需要單獨調(diào)試；
5. The main sound reinforcement and auxiliary speakers need to be separately debugged;
6、主席臺前部必須有擴聲音箱，主音箱禁止輻射到主席臺區(qū)域；
6. The front of the rostrum must have a sound reinforcement speaker, and the main speaker is prohibited from radiating into the rostrum area;
7、盡可能控制話筒同時打開的數(shù)量對抑制嘯叫有決定作用；
7. Controlling the number of microphones simultaneously turned on as much as possible has a decisive effect on suppressing whistling;
會議系統(tǒng)的壓限值要比其它任何值都要保守，通常功放功率配置時，處理器壓限啟動閾值較低，一般在-10到-20 dB之間，速度一般為1---5 ms，建議壓縮比?。?0:1無窮大；
The voltage limit of a conference system is more conservative than any other value. Generally, when configuring the power amplifier, the processor voltage limit startup threshold is low, typically between - 10 and - 20 dB, and the speed is typically 1 to 5 ms. The recommended compression ratio is 10:1 to infinity;
9、報告廳一般有多媒體播放功能，所以各主擴頻的頻段不可設(shè)置過窄，建議在40Hz-----18KHz之間。若不重放而只是單純的語言擴聲，則頻響范圍可大大減小，可設(shè)在100—12 K之間認(rèn)為完全可以；
9. The lecture hall generally has a multimedia playback function, so the frequency band of each main spread spectrum cannot be set too narrow. It is recommended to be between 40Hz and 18KHz. "If you do not reproduce but simply amplify language, the frequency response range can be greatly reduced, and it can be set between 100 and 12 K, which is considered completely acceptable;";
10、會議話筒的低切功能建議在調(diào)音臺打開，這樣低頻基本不會進入超低音系統(tǒng)，不會造成低頻反饋；
10. The low cut function of conference microphones is recommended to be turned on at the mixer, so that low frequencies will not enter the subwoofer system and will not cause low frequency feedback;
所有參數(shù)均衡或圖示均衡都被用作反饋抑制。若矩陣處理器具有反饋抑制功能，使用。另外，可以讓它的旁路失效；
All parameter equalization or graphical equalization is used as feedback suppression. If advanced matrix processors have feedback suppression capabilities, they are recommended. In addition, it can disable its bypass;
12、噪音門使用注意事項；
12. Precautions for use of noise doors;
13、調(diào)音臺的話筒平衡調(diào)節(jié)問題；
13. The microphone balance adjustment problem of the mixing station;
14、是返程系統(tǒng)。
14. Preferably, a backhaul system.
傳聲增益與聲場布局、話筒指向性、環(huán)境結(jié)構(gòu)與吸聲(聲場的頻率特性)、音箱與話筒的頻率特性直接相關(guān)。
Sound transmission gain is directly related to sound field layout, microphone directivity, environmental structure and sound absorption (frequency characteristics of the sound field), and frequency characteristics of speakers and microphones.
表演模式調(diào)試關(guān)鍵點
Key points for performance mode debugging
1、詳細(xì)查看演藝系統(tǒng)調(diào)試關(guān)鍵點(后續(xù)上傳，請關(guān)注 XYCAD微信)；
1. View the key points of performance system debugging in detail (for subsequent uploads, please follow the official WeChat account of XYCAD);
2、多功能廳中除音箱布置不可移動外，會議與表演幾乎是對立性強的兩種模式：動力、聲壓級、頻率特性、話筒、音色、各級增益、壓限的各種參數(shù)、立體聲、效果等幾乎完全不同；
2. In a multi-function hall, except for the immovable speaker arrangement, conference and performance are almost the two most antagonistic modes: power, sound pressure level, frequency characteristics, microphone, timbre, various parameters of various levels of gain, pressure limit, stereo sound, and effects, which are almost completely different;
3、反饋抑制無效；
3. Invalid feedback suppression;
4.必須進行回送。
4. Must be sent back.
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